TL431B Datasheet, PDF (19/40 Pages) Texas Instruments – ADJUSTABLE PRECISION SHUNT REGULATORS

19.1 V
1 kΩ
TL431, TL431A, TL431B, TL432, TL432A, TL432B
ADJUSTABLE PRECISION SHUNT REGULATORS
SLVS543A – AUGUST 2004 − REVISED AUGUST 2004
TYPICAL CHARACTERISTICS
EQUIVALENT INPUT NOISE VOLTAGE
OVER A 10-S PERIOD
6
5
4
3
2
1
0
−1
−2
−3
−4 f = 0.1 to 10 Hz
−5
IKA = 10 mA
TA = 25°C
−6
0 1 2 3 4 5 6 7 8 9 10
t − Time − s
500 µF
910 Ω
2000 µF
TL431
(DUT)
820 Ω
16 Ω
VCC
TLE2027
+ ^{AV = 10 V/mV}
−
16 kΩ
160 kΩ
0.1 µF
1 µF
VCC
16 kΩ
1 µF
+ ^TLE2027
−
22 µF
33 kΩ
33 kΩ
AV = 2 V/V
VEE
VEE
Figure 12. Test Circuit for Equivalent Input Noise Voltage
To
Oscilloscope
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